vendor: update github.com/hashicorp/hcl/v2 to v2.19.1

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

vendor/github.com/zclconf/go-cty/cty/ctystrings/doc.go

@@ -0,0 +1,26 @@
+// Package ctystrings is a collection of string manipulation utilities which
+// intend to help application developers implement string-manipulation
+// functionality in a way that respects the cty model of strings, even when
+// they are working in the realm of Go strings.
+//
+// cty strings are, internally, NFC-normalized as defined in Unicode Standard
+// Annex #15 and encoded as UTF-8.
+//
+// When working with [cty.Value] of string type cty manages this
+// automatically as an implementation detail, but when applications call
+// [Value.AsString] they will receive a value that has been subjected to that
+// normalization, and so may need to take that normalization into account when
+// manipulating the resulting string or comparing it with other Go strings
+// that did not originate in a [cty.Value].
+//
+// Although the core representation of [cty.String] only considers whole
+// strings, it's also conventional in other locations such as the standard
+// library functions to consider strings as being sequences of grapheme
+// clusters as defined by Unicode Standard Annex #29, which adds further
+// rules about combining multiple consecutive codepoints together into a
+// single user-percieved character. Functions that work with substrings should
+// always use grapheme clusters as their smallest unit of splitting strings,
+// and never break strings in the middle of a grapheme cluster. The functions
+// in this package respect that convention unless otherwise stated in their
+// documentation.
+package ctystrings